• SONAR
  • Insert Transient Markers at measures for time stretch? Project has fluctuating tempo
2013/05/29 09:28:56
Beepster
Hello again. Yet another question regarding my adventures in correcting the tempo of live audio. I'm assuming this should be rather simple but need a kick in the right direction. Manual entries or online tuts would be fine. Here's the low down...

I've abandoned using Edit Clip Map for extracting tempos from the kick track. Now I am simply listening to the track and using a combination of Right Click the Time Ruler > Set Beat/Measure at Now Time and manually drawing in tempo changes in the tempo view. Much easier.

So once I get that done what I would like to try to do is create transient markers on all the tracks that line up with the first beat of the measures of the now altered tempo map. This is my main question. Is there a way to do this automatically somehow and ensure that during audiosnap time stretching that audiosnap uses those transient markers exclusively? They may not even be transients in many cases due to silence or whatever but I need them to be right on the first beat of the measures.

I want to do this across all the tracks first and be able to call them up even if I change project tempos. Basically when I start manipulating the tracks with audiosnap I want to do them one at a time so I can use the appropriate algorithms (not the default Groove Clip algo). This first step is to be more of a general tempo clean up then after that I'll be cleaning up individual problem areas manually. I am kind of confused as to how the first part will work though. Insert the markers, change the project tempo to the desired steady tempo, then use audio snap one clip at a time?

So the short version is:

How can I get markers inserted across all tracks that are on the first beat of each measure to use for audiosnap?

How should I approach the general time correction once the markers are in place?

Sorry if I made that more confusing than need be. Still trying to wrap my head around this type of thing. Thanks and I hope you are all having a great day. ;-)
2013/05/29 09:43:42
Beepster
I should perhaps mention this is the type of thing I'd probably be doing a LOT of once I start taking on projects from other people. I know a lot of bands that just kind of plug in and let 'er rip so I'd like to get good at this type of correction work. For now though I'll be using it on the massive pile of my own work that's been neglected for far too long. Cheers.
2013/05/29 10:23:23
Beepster
After a bit of poking around I think I have a rough idea of a way I could approach this.

Merge and Lock: http://www.cakewalk.com/D...ioSnap.11.html#1135617

I've known about this for a while because of the Drum Prod webinar. What I'm HOPING I could do is use this merge and lock function across not only the drums but the guitar, bass and vocal tracks as well. The thing is though I want to quantize them to the ruler separately so I can choose the right algorithm. I'm not sure if this is an all or nothing thing. Will locking the transients keep them as is even if I start doing stuff elsewhere in the project?

Then the second step...

Quantize to Time Ruler: http://www.cakewalk.com/D...ioSnap.14.html#1144595

This looks like what I want but again I want to do the tracks one at a time to make sure I get the best audiosnap settings for each track.

I need to keep the phase relationship of everything intact (obviously). Am I getting warmer here?

Sorry if it seems I'm talking to myself... I do that sometimes. ;-p
2013/05/29 14:04:36
Beepster
Anyone? I do have some ideas but I'd really like to hear from some folks who have done this successfully. Still making my tempo maps right now but I would like to have a plan or two in place for when it comes time to actually give this a go. Perhaps I'm reaching beyond my experience level but that's how I learn. I'm positive this can work with the right approach... just not sure what that is yet. Cheers and sorry if I'm being a pain.
2013/05/30 09:24:58
Beepster
bump
2013/05/31 14:06:00
Beepster
Not sure if anyone was watching this but I think I found my solution. In the Inspector under Clips > Audiosnap I can set the algorithm I want for online/offline rendering on a clip by clip basis. So now (I think) I can just take my current tempo map, enable Groove Clip on the all the clips in the tracks, set the appropriate algos in the Inspector for each track then simply change the tempo to something more even to get rid of the massive drift. I think I may have to do some splits or use user defined transients as anchor points but I'll play with that when I get there. Hooray!
2013/05/31 14:08:34
scook
Oh yeah, I have been watching. Maybe this thread can turn into another saga like your BFD journey.
2013/05/31 14:19:50
Beepster
lol... Well I think if I can figure out the right way to set some anchors at the 1st beat of all the measures using my meticulously created map then in theory this should work.
2013/05/31 15:27:11
Skyline_UK
I've got a similar problem.  I played some guitar into a cover of 'Rolling In The Deep' and want to correct the fact my 'chugs' in the intro are slightly early.  I selected the clip, hit A to bring up audio snap, ticked 'quantize' and 'audio snap beats'.  Nothing changes. I always found audio snap impenetrable and here we are again - follow instructions and zero.  Guess I'm going to have to manually pull the clips into line. (Hm, or bring them into Melodyne.  At least Melodye works.....) 
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